---------------------------------------------------------------------------------------------------
      name:  <unnamed>
       log:  /volumes/ddisk/math/soviet/Table_5.log
  log type:  text
 opened on:  23 Mar 2014, 08:58:18

. clear;

. clear matrix;

. clear mata;

. use "/volumes/ddisk/math/ams/international/soviet_universe.dta", clear;

. keep if soviet==1;
(0 observations deleted)

. keep unique soviet;

. sort unique;

. save "/volumes/ddisk/data/junk_soviet_uniques.dta", replace;
file /volumes/ddisk/data/junk_soviet_uniques.dta saved

. use "/volumes/ddisk/math/ams/clean_ams_data.dta", replace;

. drop institution_pre modal_institution;

. sort unique year subject;

. by unique: egen minyear = min(year);

. generate good=.;
(2874683 missing values generated)

. replace good=1 if year>=1970 & year<=1989;
(771526 real changes made)

. egen n70=sum(good*papers), by(unique);

. drop if n70==0;
(1113474 observations deleted)

. rename citations citations_ams;

. merge unique using "/volumes/ddisk/data/junk_soviet_uniques.dta";
(note: you are using old merge syntax; see [D] merge for new syntax)
variable unique does not uniquely identify observations in the master data

. drop _merge;

. keep if soviet==1;
(1568117 observations deleted)

. drop soviet;

. keep if year >= 1978;
(35684 observations deleted)

. fillin unique year subject;

. replace papers = 0 if papers == .;
(26442068 real changes made)

. replace citations_ams = 0 if citations_ams == .;
(26442068 real changes made)

. summ minyear papers;

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
     minyear |    157408    1973.255    10.04847       1940       1989
      papers |  26599476    .0087667    .1400836          0         34

. egen mean_minyear=mean(minyear), by(unique);

. replace minyear=mean_minyear if minyear==.;
(26442068 real changes made)

. summ minyear papers;

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
     minyear |  26599476    1977.515    9.698246       1940       1989
      papers |  26599476    .0087667    .1400836          0         34

. merge unique using "/volumes/ddisk/math/ams/international/soviet_universe.dta";
(note: you are using old merge syntax; see [D] merge for new syntax)
variable unique does not uniquely identify observations in the master data

. drop _merge;

. keep if soviet==1;
(0 observations deleted)

. drop if emigre==1;
(2286985 observations deleted)

. drop country;

. rename modal_country country;

. save /volumes/ddisk/data/junkdata0.dta, replace;
file /volumes/ddisk/data/junkdata0.dta saved

. *MAKING SURE THEY ARE IN USSR IN 84-89;
. generate soviet_forever=.;
(24312491 missing values generated)

. replace soviet_forever=1 if country=="2" | country=="AR" | country=="AZ"
>         | country=="BE" | country=="ES" | country=="GE" | country=="KZ"
>         | country=="KY" | country=="LA" | country=="LI" | country=="MO"
>         | country=="RS" | country=="TJ" | country=="TKM" | country=="UKR"
>         | country=="UZ";
(78995 real changes made)

. *TRYING TO CATCH AS MANY SOVIETS AS POSSIBLE;
. generate mix=0;

. generate dum=regexm(country,"2");

. replace mix=1 if dum==1;
(27550 real changes made)

. drop dum;

. *ACCOUNTS FOR SAUDI ARABIA, WHICH IS SAR, HENCE EASILY CONFUSED WITH AR;
. generate dum=regexm(country,"AR");

. generate dumsar=regexm(country,"SAR");

. replace mix=1 if dum==1 & dumsar==0;
(1467 real changes made)

. drop dum dumsar;

. generate dum=regexm(country,"AZ");

. replace mix=1 if dum==1;
(1082 real changes made)

. drop dum;

. generate dum=regexm(country,"BE");

. replace mix=1 if dum==1;
(2961 real changes made)

. drop dum;

. generate dum=regexm(country,"ES");

. replace mix=1 if dum==1;
(627 real changes made)

. drop dum;

. generate dum=regexm(country,"GE");

. replace mix=1 if dum==1;
(2238 real changes made)

. drop dum;

. generate dum=regexm(country,"KZ");

. replace mix=1 if dum==1;
(703 real changes made)

. drop dum;

. generate dum=regexm(country,"KY");

. replace mix=1 if dum==1;
(54 real changes made)

. drop dum;

. generate dum=regexm(country,"LA");

. replace mix=1 if dum==1;
(518 real changes made)

. drop dum;

. generate dum=regexm(country,"LI");

. replace mix=1 if dum==1;
(1158 real changes made)

. drop dum;

. generate dum=regexm(country,"MO");

. replace mix=1 if dum==1;
(357 real changes made)

. drop dum;

. generate dum=regexm(country,"RS");

. replace mix=1 if dum==1;
(32537 real changes made)

. drop dum;

. generate dum=regexm(country,"TJ");

. replace mix=1 if dum==1;
(306 real changes made)

. drop dum;

. generate dum=regexm(country,"TKM");

. replace mix=1 if dum==1;
(36 real changes made)

. drop dum;

. generate dum=regexm(country,"UKR");

. replace mix=1 if dum==1;
(10323 real changes made)

. drop dum;

. generate dum=regexm(country,"UZ");

. replace mix=1 if dum==1;
(1075 real changes made)

. drop dum;

. replace soviet_forever=1 if mix==1;
(3997 real changes made)

. generate in_ussr=.;
(24312491 missing values generated)

. replace in_ussr=1 if soviet_forever==1 ;
(82992 real changes made)

. replace in_ussr=0 if soviet_forever~=1 & country~="" & country~="NA";
(7139 real changes made)

. drop good;

. generate good=.;
(24312491 missing values generated)

. replace good=1 if year>=1984 & year<=1989;
(4290432 real changes made)

. egen pussr=mean(good*in_ussr), by(unique);
(1577605 missing values generated)

. *RESTRICT SAMPLE TO THOSE WHO PUBLISHED IN 84-89 AND WHO ARE IN USSR;
. *keep if pussr>.5 & pussr<=1;
. keep if year>=1982 & year<=2008;
(5005509 observations deleted)

. sort unique;

. merge unique using "/volumes/ddisk/math/soviet/key_variables5.dta";
(note: you are using old merge syntax; see [D] merge for new syntax)
variable unique does not uniquely identify observations in the master data

. drop _merge;

. drop if papers==.;
(0 observations deleted)

. summ papers ;

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
      papers |  19306982    .0080802    .1315601          0         25

. generate post1992=(year>=1992);

. generate inter_shock_ams=post1992*shock_ams;

. generate inter_shock1=post1992*shock1;

. generate lpapers=log(1+papers);

. generate inter_pexp=post1992*pexposed;

. generate inter_inst_pexp=post1992*inst_shock_ams;
(15553 missing values generated)

. generate paut1=coauthor_emigre;
(5330889 missing values generated)

. generate inter_paut1=post1992*paut1;
(5330889 missing values generated)

. generate inter_coauthor=post1992*coauthor_shock_ams;
(4147205 missing values generated)

. generate coauthor_sov1=(coauthor_emigre~=.);

. generate publish=(papers>0);

. replace inter_paut1=0 if inter_paut1==.;
(5330889 real changes made)

. replace inter_coauthor=0 if inter_coauthor==.;
(4147205 real changes made)

. replace quality_coauthors=0 if quality_coauthors==.;
(5330889 real changes made)

. replace quality_coauthors=(quality_coauthors>92);
(13976093 real changes made)

. generate inter_high=quality_coauthors*inter_paut1;

. generate inter_low=(1-quality_coauthors)*inter_paut1;

. generate inter_high_inst=quality_coauthors*inter_coauthor;

. drop if emigre==1;
(0 observations deleted)

. drop if unique==.;
(0 observations deleted)

. drop string_year _fillin n70 soviet_forever country mix
>         pussr0 pussr2 phdussr degree_year pussr2new pmodal in_ussr good pussr;

. tab year, gen(dyear);

       year |      Freq.     Percent        Cum.
------------+-----------------------------------
       1982 |    715,080        3.70        3.70
       1983 |    715,077        3.70        7.41
       1984 |    715,072        3.70       11.11
       1985 |    715,072        3.70       14.81
       1986 |    715,072        3.70       18.52
       1987 |    715,072        3.70       22.22
       1988 |    715,072        3.70       25.93
       1989 |    715,072        3.70       29.63
       1990 |    715,072        3.70       33.33
       1991 |    715,072        3.70       37.04
       1992 |    715,073        3.70       40.74
       1993 |    715,072        3.70       44.44
       1994 |    715,074        3.70       48.15
       1995 |    715,072        3.70       51.85
       1996 |    715,072        3.70       55.56
       1997 |    715,076        3.70       59.26
       1998 |    715,084        3.70       62.96
       1999 |    715,077        3.70       66.67
       2000 |    715,073        3.70       70.37
       2001 |    715,072        3.70       74.07
       2002 |    715,072        3.70       77.78
       2003 |    715,072        3.70       81.48
       2004 |    715,072        3.70       85.19
       2005 |    715,072        3.70       88.89
       2006 |    715,072        3.70       92.59
       2007 |    715,072        3.70       96.30
       2008 |    715,072        3.70      100.00
------------+-----------------------------------
      Total | 19,306,982      100.00

. compress;
year was float now int
minyear was float now int
mean_minyear was float now int
soviet was float now byte
emigre was float now byte
quality_coauthors was float now byte
post1992 was float now byte
coauthor_sov1 was float now byte
publish was float now byte

. generate exper = year - minyear;

. generate exper2 = exper*exper;

. generate exper3 = exper2*exper;

. generate exper4 = exper3*exper;

. keep papers lpapers post1992 exper* year
>         unique subject publish quality_coauthor;

. keep if year>=1982 & year<=2008;
(0 observations deleted)

. summ;

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
      unique |  19306982      229286    49532.32      22180     858129
     subject |  19306982    45.07814    27.62433          0         94
      papers |  19306982    .0080802    .1315601          0         25
        year |  19306982        1995    7.788881       1982       2008
quality_co~s |  19306982    .0498523    .2176398          0          1
-------------+--------------------------------------------------------
    post1992 |  19306982    .6296297    .4829039          0          1
     lpapers |  19306982    .0047083    .0664754          0   3.258096
     publish |  19306982    .0055654     .074394          0          1
       exper |  19306982    17.48466    12.49825         -7         68
      exper2 |  19306982    461.9196    557.6609          0       4624
-------------+--------------------------------------------------------
      exper3 |  19306982    14534.02    26343.08       -343     314432
      exper4 |  19306982    524355.3     1319082          0   2.14e+07

. sort unique;

. merge unique using /volumes/ddisk/math/soviet/shocks_and_instruments.dta;
(note: you are using old merge syntax; see [D] merge for new syntax)
variable unique does not uniquely identify observations in the master data

. drop _merge;

. rename shock_idea_space shock_idea;

. rename shock_geographic_space shock_geographic;

. rename shock_coauthor_space shock_coauthor;

. rename instrument_idea_space instrument_idea;

. rename instrument_geographic_space instrument_geographic;

. rename instrument_coauthor_space instrument_coauthor;

. rename shock_coauthor_space_high shock_coauthor_high;

. rename shock_coauthor_space_low shock_coauthor_low;

. rename instrument_coauthor_space_high instrument_coauthor_high;

. rename instrument_coauthor_space_low instrument_coauthor_low;

. replace shock_coauthor=0 if shock_coauthor==.;
(5330889 real changes made)

. replace shock_coauthor_high=0 if shock_coauthor_high==.;
(5330889 real changes made)

. replace shock_coauthor_low=0 if shock_coauthor_low==.;
(5330889 real changes made)

. replace instrument_coauthor=0 if instrument_coauthor==.;
(4147205 real changes made)

. replace instrument_coauthor_high=0 if instrument_coauthor_high==.;
(4147205 real changes made)

. replace instrument_coauthor_low=0 if instrument_coauthor_low==.;
(4147205 real changes made)

. generate inter_shock_idea=post1992*shock_idea;

. generate inter_instrument_idea=post1992*instrument_idea;

. generate inter_shock_geographic=post1992*shock_geographic;

. generate inter_instrument_geographic=post1992*instrument_geographic;

. generate inter_shock_coauthor=post1992*shock_coauthor;

. generate inter_instrument_coauthor=post1992*instrument_coauthor;

. generate inter_shock_coauthor_high=post1992*shock_coauthor_high;

. generate inter_instrument_coauthor_high=post1992*instrument_coauthor_high;

. generate inter_shock_coauthor_low=post1992*shock_coauthor_low;

. generate inter_instrument_coauthor_low=post1992*instrument_coauthor_low;

. save /volumes/ddisk/data/junksubject.dta, replace;
file /volumes/ddisk/data/junksubject.dta saved

. use /volumes/ddisk/data/junksubject.dta, clear;

. keep if exper>=0 & exper<=60;
(1184128 observations deleted)

. quietly tabulate year, gen(dyear);

.         gen double indicator_category = subject*10000 + year;

. sort indicator_category;

. by indicator_category: egen m_papers = mean(papers);

. by indicator_category: egen m_publish = mean(publish);

. by indicator_category: egen m_inter_shock_idea = mean(inter_shock_idea);

. by indicator_category: egen m_inter_shock_geographic = mean(inter_shock_geographic);

. by indicator_category: egen m_inter_shock_coauthor = mean(inter_shock_coauthor);

. by indicator_category: egen m_post1992 = mean(post1992);

. by indicator_category: egen m_exper = mean(exper);

. by indicator_category: egen m_exper2 = mean(exper2);

. by indicator_category: egen m_exper3 = mean(exper3);

. by indicator_category: egen m_exper4 = mean(exper4);

. replace lpapers = papers - m_papers;
(17400830 real changes made)

. replace publish = publish - m_publish;
publish was byte now float
(17400830 real changes made)

. replace inter_shock_idea = inter_shock_idea - m_inter_shock_idea;
(12134361 real changes made)

. replace inter_shock_geographic = inter_shock_geographic - m_inter_shock_geographic;
(12134361 real changes made)

. replace inter_shock_coauthor = inter_shock_coauthor - m_inter_shock_coauthor;
(12134361 real changes made)

. replace post1992 = post1992 - m_post1992;
(12134361 real changes made)

. replace exper = exper - m_exper;
(18122854 real changes made)

. replace exper2 = exper2 - m_exper2;
(18122854 real changes made)

. replace exper3 = exper3 - m_exper3;
(18122854 real changes made)

. replace exper4 = exper4 - m_exper4;
(18122854 real changes made)

. by indicator_category: egen m_inter_instrument_idea = mean(inter_instrument_idea);

. by indicator_category: egen m_inter_instrument_geographic = mean(inter_instrument_geographic);

. by indicator_category: egen m_inter_instrument_coauthor = mean(inter_instrument_coauthor);

. replace inter_instrument_idea = inter_instrument_idea - m_inter_instrument_idea;
(12134361 real changes made)

. replace inter_instrument_geographic = inter_instrument_geographic - m_inter_instrument_geographic
> ;
(12134361 real changes made)

. replace inter_instrument_coauthor = inter_instrument_coauthor - m_inter_instrument_coauthor;
(12134361 real changes made)

. by indicator_category: egen m_inter_shock_coauthor_high = mean(inter_shock_coauthor_high);

. by indicator_category: egen m_inter_shock_coauthor_low = mean(inter_shock_coauthor_low);

. replace inter_shock_coauthor_high = inter_shock_coauthor_high - m_inter_shock_coauthor_high;
(12134361 real changes made)

. replace inter_shock_coauthor_low = inter_shock_coauthor_low - m_inter_shock_coauthor_low;
(12134361 real changes made)

. by indicator_category: egen m_inter_instrument_coauthor_high = mean(inter_instrument_coauthor_hig
> h);

. by indicator_category: egen m_inter_instrument_coauthor_low = mean(inter_instrument_coauthor_low)
> ;

. replace inter_instrument_coauthor_high = inter_instrument_coauthor_high - m_inter_instrument_coau
> thor_high;
(12134361 real changes made)

. replace inter_instrument_coauthor_low = inter_instrument_coauthor_low - m_inter_instrument_coauth
> or_low;
(12134361 real changes made)

. drop m_*;

. compress;
indicator_category was double now long

. save /volumes/ddisk/data/junkdata.dta, replace;
file /volumes/ddisk/data/junkdata.dta saved

. use /volumes/ddisk/data/junkdata.dta, clear;

. sort unique year subject papers;

. duplicates drop unique year subject, force;

Duplicates in terms of unique year subject

(38 observations deleted)

. summ unique papers;

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
      unique |  18122816    227635.8    49361.21      22180     858129
      papers |  18122816    .0086005    .1357077          0         25

. merge 1:1 unique year subject using /volumes/ddisk/math/soviet/english_papers_unique_year_subject
> 2.dta, 
>         generate(_merge_english);
year was int now float
subject was byte now float

    Result                           # of obs.
    -----------------------------------------
    not matched                   107,779,364
        from master                10,386,240  (_merge_english==1)
        from using                 97,393,124  (_merge_english==2)

    matched                         7,736,576  (_merge_english==3)
    -----------------------------------------

. drop if _merge_english == 2;
(97393124 observations deleted)

. summ unique papers;

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
      unique |  18122816    227635.8    49361.21      22180     858129
      papers |  18122816    .0086005    .1357077          0         25

. gen combined_papers = papers;

. summ unique papers combined_papers;

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
      unique |  18122816    227635.8    49361.21      22180     858129
      papers |  18122816    .0086005    .1357077          0         25
combined_p~s |  18122816    .0086005    .1357077          0         25

. *I ADDED THE FOLLOWING LINE INTO THE CODE;
. replace english_papers=0 if english_papers==.;
(10386240 real changes made)

. replace combined_papers = english_papers if year >= 1992;
(47128 real changes made)

. summ unique papers combined_papers;

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
      unique |  18122816    227635.8    49361.21      22180     858129
      papers |  18122816    .0086005    .1357077          0         25
combined_p~s |  18122816    .0055857    .1097317          0         18

. generate c_publish=(combined_papers>0);

. generate c_papers=combined_papers;

. sort indicator_category;

. by indicator_category: egen m_c_papers = mean(c_papers);

. by indicator_category: egen m_c_publish = mean(c_publish);

. replace c_papers = c_papers - m_c_papers;
(16842593 real changes made)

. replace c_publish = c_publish - m_c_publish;
(16842593 real changes made)

. rename inter_instrument_coauthor_high inter_inst_coauthor_high;

. rename inter_instrument_coauthor_low inter_inst_coauthor_low;

. xtivreg2 publish post1992 exper* 
>         (inter_shock_idea = 
>         inter_instrument_idea ) , 
>         fe i(unique) cluster(unique);
Warning - collinearities detected
Vars dropped:  post1992

FIXED EFFECTS ESTIMATION
------------------------
Number of groups =     11173                    Obs per group: min =      1216
                                                               avg =    1622.0
                                                               max =      1728

IV (2SLS) estimation
--------------------

Estimates efficient for homoskedasticity only
Statistics robust to heteroskedasticity and clustering on unique

Number of clusters (unique) =    11173                Number of obs = 18122816
                                                      F(  5, 11172) =   254.91
                                                      Prob > F      =   0.0000
Total (centered) SS     =   104844.647                Centered R2   =   0.0002
Total (uncentered) SS   =   104844.647                Uncentered R2 =   0.0002
Residual SS             =  104826.3094                Root MSE      =   .07608

----------------------------------------------------------------------------------
                 |               Robust
         publish |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-----------------+----------------------------------------------------------------
inter_shock_idea |   .0115396   .0020074     5.75   0.000     .0076051    .0154742
           exper |  -.0006137   .0000311   -19.72   0.000    -.0006747   -.0005527
          exper2 |   .0000594   2.50e-06    23.82   0.000     .0000545    .0000643
          exper3 |  -1.41e-06   7.78e-08   -18.15   0.000    -1.57e-06   -1.26e-06
          exper4 |   1.04e-08   7.82e-10    13.23   0.000     8.82e-09    1.19e-08
----------------------------------------------------------------------------------
Underidentification test (Kleibergen-Paap rk LM statistic):           1512.108
                                                   Chi-sq(1) P-val =    0.0000
------------------------------------------------------------------------------
Weak identification test (Cragg-Donald Wald F statistic):              5.8e+06
                         (Kleibergen-Paap rk Wald F statistic):       1979.912
Stock-Yogo weak ID test critical values: 10% maximal IV size             16.38
                                         15% maximal IV size              8.96
                                         20% maximal IV size              6.66
                                         25% maximal IV size              5.53
Source: Stock-Yogo (2005).  Reproduced by permission.
NB: Critical values are for Cragg-Donald F statistic and i.i.d. errors.
------------------------------------------------------------------------------
Hansen J statistic (overidentification test of all instruments):         0.000
                                                 (equation exactly identified)
------------------------------------------------------------------------------
Instrumented:         inter_shock_idea
Included instruments: exper exper2 exper3 exper4
Excluded instruments: inter_instrument_idea
Dropped collinear:    post1992
------------------------------------------------------------------------------

. xtivreg2 papers post1992 exper* 
>         (inter_shock_idea  = 
>         inter_instrument_idea ) , 
>         fe i(unique) cluster(unique);
Warning - collinearities detected
Vars dropped:  post1992

FIXED EFFECTS ESTIMATION
------------------------
Number of groups =     11173                    Obs per group: min =      1216
                                                               avg =    1622.0
                                                               max =      1728

IV (2SLS) estimation
--------------------

Estimates efficient for homoskedasticity only
Statistics robust to heteroskedasticity and clustering on unique

Number of clusters (unique) =    11173                Number of obs = 18122816
                                                      F(  5, 11172) =   396.08
                                                      Prob > F      =   0.0000
Total (centered) SS     =  330622.6498                Centered R2   =   0.0002
Total (uncentered) SS   =  330622.6498                Uncentered R2 =   0.0002
Residual SS             =  330554.8617                Root MSE      =    .1351

----------------------------------------------------------------------------------
                 |               Robust
          papers |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-----------------+----------------------------------------------------------------
inter_shock_idea |   .0124577   .0039526     3.15   0.002     .0047108    .0202047
           exper |  -.0019676   .0000576   -34.15   0.000    -.0020806   -.0018547
          exper2 |   .0000663   4.88e-06    13.58   0.000     .0000567    .0000758
          exper3 |  -1.52e-06   1.55e-07    -9.81   0.000    -1.82e-06   -1.21e-06
          exper4 |   1.00e-08   1.58e-09     6.35   0.000     6.94e-09    1.31e-08
----------------------------------------------------------------------------------
Underidentification test (Kleibergen-Paap rk LM statistic):           1512.108
                                                   Chi-sq(1) P-val =    0.0000
------------------------------------------------------------------------------
Weak identification test (Cragg-Donald Wald F statistic):              5.8e+06
                         (Kleibergen-Paap rk Wald F statistic):       1979.912
Stock-Yogo weak ID test critical values: 10% maximal IV size             16.38
                                         15% maximal IV size              8.96
                                         20% maximal IV size              6.66
                                         25% maximal IV size              5.53
Source: Stock-Yogo (2005).  Reproduced by permission.
NB: Critical values are for Cragg-Donald F statistic and i.i.d. errors.
------------------------------------------------------------------------------
Hansen J statistic (overidentification test of all instruments):         0.000
                                                 (equation exactly identified)
------------------------------------------------------------------------------
Instrumented:         inter_shock_idea
Included instruments: exper exper2 exper3 exper4
Excluded instruments: inter_instrument_idea
Dropped collinear:    post1992
------------------------------------------------------------------------------

.         xtivreg2 publish post1992 exper* 
>         ( inter_shock_geographic  = 
>          inter_instrument_geographic ) , 
>         fe i(unique) cluster(unique);
Warning - collinearities detected
Vars dropped:  post1992

FIXED EFFECTS ESTIMATION
------------------------
Number of groups =     11173                    Obs per group: min =      1216
                                                               avg =    1622.0
                                                               max =      1728

IV (2SLS) estimation
--------------------

Estimates efficient for homoskedasticity only
Statistics robust to heteroskedasticity and clustering on unique

Number of clusters (unique) =    11173                Number of obs = 18122816
                                                      F(  5, 11172) =   244.56
                                                      Prob > F      =   0.0000
Total (centered) SS     =   104844.647                Centered R2   =   0.0002
Total (uncentered) SS   =   104844.647                Uncentered R2 =   0.0002
Residual SS             =  104827.5691                Root MSE      =   .07608

----------------------------------------------------------------------------------------
                       |               Robust
               publish |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-----------------------+----------------------------------------------------------------
inter_shock_geographic |   .0082448   .0022159     3.72   0.000     .0039016    .0125879
                 exper |  -.0006194   .0000312   -19.87   0.000    -.0006804   -.0005583
                exper2 |   .0000601   2.51e-06    23.96   0.000     .0000552     .000065
                exper3 |  -1.43e-06   7.81e-08   -18.34   0.000    -1.59e-06   -1.28e-06
                exper4 |   1.05e-08   7.84e-10    13.39   0.000     8.96e-09    1.20e-08
----------------------------------------------------------------------------------------
Underidentification test (Kleibergen-Paap rk LM statistic):            389.014
                                                   Chi-sq(1) P-val =    0.0000
------------------------------------------------------------------------------
Weak identification test (Cragg-Donald Wald F statistic):              1.6e+06
                         (Kleibergen-Paap rk Wald F statistic):        175.652
Stock-Yogo weak ID test critical values: 10% maximal IV size             16.38
                                         15% maximal IV size              8.96
                                         20% maximal IV size              6.66
                                         25% maximal IV size              5.53
Source: Stock-Yogo (2005).  Reproduced by permission.
NB: Critical values are for Cragg-Donald F statistic and i.i.d. errors.
------------------------------------------------------------------------------
Hansen J statistic (overidentification test of all instruments):         0.000
                                                 (equation exactly identified)
------------------------------------------------------------------------------
Instrumented:         inter_shock_geographic
Included instruments: exper exper2 exper3 exper4
Excluded instruments: inter_instrument_geographic
Dropped collinear:    post1992
------------------------------------------------------------------------------

. xtivreg2 papers post1992 exper* 
>         ( inter_shock_geographic  = 
>          inter_instrument_geographic ) , 
>         fe i(unique) cluster(unique);
Warning - collinearities detected
Vars dropped:  post1992

FIXED EFFECTS ESTIMATION
------------------------
Number of groups =     11173                    Obs per group: min =      1216
                                                               avg =    1622.0
                                                               max =      1728

IV (2SLS) estimation
--------------------

Estimates efficient for homoskedasticity only
Statistics robust to heteroskedasticity and clustering on unique

Number of clusters (unique) =    11173                Number of obs = 18122816
                                                      F(  5, 11172) =   393.14
                                                      Prob > F      =   0.0000
Total (centered) SS     =  330622.6498                Centered R2   =   0.0002
Total (uncentered) SS   =  330622.6498                Uncentered R2 =   0.0002
Residual SS             =   330555.043                Root MSE      =    .1351

----------------------------------------------------------------------------------------
                       |               Robust
                papers |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-----------------------+----------------------------------------------------------------
inter_shock_geographic |   .0072417   .0049271     1.47   0.142    -.0024152    .0168986
                 exper |  -.0019724   .0000578   -34.10   0.000    -.0020857    -.001859
                exper2 |   .0000668   4.92e-06    13.59   0.000     .0000572    .0000765
                exper3 |  -1.53e-06   1.56e-07    -9.86   0.000    -1.84e-06   -1.23e-06
                exper4 |   1.02e-08   1.59e-09     6.40   0.000     7.06e-09    1.33e-08
----------------------------------------------------------------------------------------
Underidentification test (Kleibergen-Paap rk LM statistic):            389.014
                                                   Chi-sq(1) P-val =    0.0000
------------------------------------------------------------------------------
Weak identification test (Cragg-Donald Wald F statistic):              1.6e+06
                         (Kleibergen-Paap rk Wald F statistic):        175.652
Stock-Yogo weak ID test critical values: 10% maximal IV size             16.38
                                         15% maximal IV size              8.96
                                         20% maximal IV size              6.66
                                         25% maximal IV size              5.53
Source: Stock-Yogo (2005).  Reproduced by permission.
NB: Critical values are for Cragg-Donald F statistic and i.i.d. errors.
------------------------------------------------------------------------------
Hansen J statistic (overidentification test of all instruments):         0.000
                                                 (equation exactly identified)
------------------------------------------------------------------------------
Instrumented:         inter_shock_geographic
Included instruments: exper exper2 exper3 exper4
Excluded instruments: inter_instrument_geographic
Dropped collinear:    post1992
------------------------------------------------------------------------------

.         xtivreg2 publish post1992 exper* 
>         (  inter_shock_coauthor= 
>          inter_instrument_coauthor) , 
>         fe i(unique) cluster(unique);
Warning - collinearities detected
Vars dropped:  post1992

FIXED EFFECTS ESTIMATION
------------------------
Number of groups =     11173                    Obs per group: min =      1216
                                                               avg =    1622.0
                                                               max =      1728

IV (2SLS) estimation
--------------------

Estimates efficient for homoskedasticity only
Statistics robust to heteroskedasticity and clustering on unique

Number of clusters (unique) =    11173                Number of obs = 18122816
                                                      F(  5, 11172) =   243.04
                                                      Prob > F      =   0.0000
Total (centered) SS     =   104844.647                Centered R2   =   0.0002
Total (uncentered) SS   =   104844.647                Uncentered R2 =   0.0002
Residual SS             =  104827.9523                Root MSE      =   .07608

--------------------------------------------------------------------------------------
                     |               Robust
             publish |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
---------------------+----------------------------------------------------------------
inter_shock_coauthor |    .002354   .0013635     1.73   0.084    -.0003183    .0050264
               exper |  -.0006087   .0000314   -19.41   0.000    -.0006702   -.0005472
              exper2 |    .000059   2.52e-06    23.44   0.000      .000054    .0000639
              exper3 |  -1.40e-06   7.83e-08   -17.89   0.000    -1.55e-06   -1.25e-06
              exper4 |   1.03e-08   7.87e-10    13.02   0.000     8.71e-09    1.18e-08
--------------------------------------------------------------------------------------
Underidentification test (Kleibergen-Paap rk LM statistic):            103.233
                                                   Chi-sq(1) P-val =    0.0000
------------------------------------------------------------------------------
Weak identification test (Cragg-Donald Wald F statistic):              6.3e+05
                         (Kleibergen-Paap rk Wald F statistic):        122.018
Stock-Yogo weak ID test critical values: 10% maximal IV size             16.38
                                         15% maximal IV size              8.96
                                         20% maximal IV size              6.66
                                         25% maximal IV size              5.53
Source: Stock-Yogo (2005).  Reproduced by permission.
NB: Critical values are for Cragg-Donald F statistic and i.i.d. errors.
------------------------------------------------------------------------------
Hansen J statistic (overidentification test of all instruments):         0.000
                                                 (equation exactly identified)
------------------------------------------------------------------------------
Instrumented:         inter_shock_coauthor
Included instruments: exper exper2 exper3 exper4
Excluded instruments: inter_instrument_coauthor
Dropped collinear:    post1992
------------------------------------------------------------------------------

. xtivreg2 papers post1992 exper* 
>         (  inter_shock_coauthor= 
>          inter_instrument_coauthor) , 
>         fe i(unique) cluster(unique);
Warning - collinearities detected
Vars dropped:  post1992

FIXED EFFECTS ESTIMATION
------------------------
Number of groups =     11173                    Obs per group: min =      1216
                                                               avg =    1622.0
                                                               max =      1728

IV (2SLS) estimation
--------------------

Estimates efficient for homoskedasticity only
Statistics robust to heteroskedasticity and clustering on unique

Number of clusters (unique) =    11173                Number of obs = 18122816
                                                      F(  5, 11172) =   390.77
                                                      Prob > F      =   0.0000
Total (centered) SS     =  330622.6498                Centered R2   =   0.0002
Total (uncentered) SS   =  330622.6498                Uncentered R2 =   0.0002
Residual SS             =  330557.0627                Root MSE      =    .1351

--------------------------------------------------------------------------------------
                     |               Robust
              papers |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
---------------------+----------------------------------------------------------------
inter_shock_coauthor |   .0015159   .0022627     0.67   0.503    -.0029189    .0059508
               exper |   -.001964   .0000579   -33.95   0.000    -.0020774   -.0018506
              exper2 |   .0000659   4.90e-06    13.45   0.000     .0000563    .0000755
              exper3 |  -1.51e-06   1.55e-07    -9.73   0.000    -1.81e-06   -1.21e-06
              exper4 |   9.98e-09   1.59e-09     6.29   0.000     6.87e-09    1.31e-08
--------------------------------------------------------------------------------------
Underidentification test (Kleibergen-Paap rk LM statistic):            103.233
                                                   Chi-sq(1) P-val =    0.0000
------------------------------------------------------------------------------
Weak identification test (Cragg-Donald Wald F statistic):              6.3e+05
                         (Kleibergen-Paap rk Wald F statistic):        122.018
Stock-Yogo weak ID test critical values: 10% maximal IV size             16.38
                                         15% maximal IV size              8.96
                                         20% maximal IV size              6.66
                                         25% maximal IV size              5.53
Source: Stock-Yogo (2005).  Reproduced by permission.
NB: Critical values are for Cragg-Donald F statistic and i.i.d. errors.
------------------------------------------------------------------------------
Hansen J statistic (overidentification test of all instruments):         0.000
                                                 (equation exactly identified)
------------------------------------------------------------------------------
Instrumented:         inter_shock_coauthor
Included instruments: exper exper2 exper3 exper4
Excluded instruments: inter_instrument_coauthor
Dropped collinear:    post1992
------------------------------------------------------------------------------

.         xtivreg2 publish post1992 exper* 
>         (inter_shock_idea inter_shock_geographic  inter_shock_coauthor= 
>         inter_instrument_idea inter_instrument_geographic inter_instrument_coauthor) , 
>         fe i(unique) cluster(unique);
Warning - collinearities detected
Vars dropped:  post1992

FIXED EFFECTS ESTIMATION
------------------------
Number of groups =     11173                    Obs per group: min =      1216
                                                               avg =    1622.0
                                                               max =      1728

IV (2SLS) estimation
--------------------

Estimates efficient for homoskedasticity only
Statistics robust to heteroskedasticity and clustering on unique

Number of clusters (unique) =    11173                Number of obs = 18122816
                                                      F(  7, 11172) =   182.49
                                                      Prob > F      =   0.0000
Total (centered) SS     =   104844.647                Centered R2   =   0.0002
Total (uncentered) SS   =   104844.647                Uncentered R2 =   0.0002
Residual SS             =   104826.527                Root MSE      =   .07608

----------------------------------------------------------------------------------------
                       |               Robust
               publish |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-----------------------+----------------------------------------------------------------
      inter_shock_idea |   .0067791   .0024998     2.71   0.007     .0018795    .0116786
inter_shock_geographic |   .0074267   .0026622     2.79   0.005     .0022089    .0126445
  inter_shock_coauthor |  -.0000785   .0016331    -0.05   0.962    -.0032794    .0031223
                 exper |  -.0006194   .0000313   -19.78   0.000    -.0006808    -.000558
                exper2 |   .0000601   2.53e-06    23.74   0.000     .0000551    .0000651
                exper3 |  -1.43e-06   7.86e-08   -18.20   0.000    -1.58e-06   -1.28e-06
                exper4 |   1.05e-08   7.88e-10    13.32   0.000     8.95e-09    1.20e-08
----------------------------------------------------------------------------------------
Underidentification test (Kleibergen-Paap rk LM statistic):             82.803
                                                   Chi-sq(1) P-val =    0.0000
------------------------------------------------------------------------------
Weak identification test (Cragg-Donald Wald F statistic):              1.5e+05
                         (Kleibergen-Paap rk Wald F statistic):         31.516
Stock-Yogo weak ID test critical values:                       <not available>
------------------------------------------------------------------------------
Hansen J statistic (overidentification test of all instruments):         0.000
                                                 (equation exactly identified)
------------------------------------------------------------------------------
Instrumented:         inter_shock_idea inter_shock_geographic
                      inter_shock_coauthor
Included instruments: exper exper2 exper3 exper4
Excluded instruments: inter_instrument_idea inter_instrument_geographic
                      inter_instrument_coauthor
Dropped collinear:    post1992
------------------------------------------------------------------------------

. xtivreg2 papers post1992 exper* 
>         (inter_shock_idea inter_shock_geographic  inter_shock_coauthor= 
>         inter_instrument_idea inter_instrument_geographic inter_instrument_coauthor) , 
>         fe i(unique) cluster(unique);
Warning - collinearities detected
Vars dropped:  post1992

FIXED EFFECTS ESTIMATION
------------------------
Number of groups =     11173                    Obs per group: min =      1216
                                                               avg =    1622.0
                                                               max =      1728

IV (2SLS) estimation
--------------------

Estimates efficient for homoskedasticity only
Statistics robust to heteroskedasticity and clustering on unique

Number of clusters (unique) =    11173                Number of obs = 18122816
                                                      F(  7, 11172) =   283.79
                                                      Prob > F      =   0.0000
Total (centered) SS     =  330622.6498                Centered R2   =   0.0002
Total (uncentered) SS   =  330622.6498                Uncentered R2 =   0.0002
Residual SS             =  330553.5409                Root MSE      =    .1351

----------------------------------------------------------------------------------------
                       |               Robust
                papers |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-----------------------+----------------------------------------------------------------
      inter_shock_idea |   .0089313   .0046616     1.92   0.055    -.0002052    .0180678
inter_shock_geographic |   .0065682   .0057869     1.14   0.256    -.0047739    .0179103
  inter_shock_coauthor |  -.0008841   .0027383    -0.32   0.747     -.006251    .0044828
                 exper |  -.0019741   .0000582   -33.93   0.000    -.0020882   -.0018601
                exper2 |    .000067   4.97e-06    13.47   0.000     .0000572    .0000767
                exper3 |  -1.54e-06   1.57e-07    -9.79   0.000    -1.84e-06   -1.23e-06
                exper4 |   1.02e-08   1.60e-09     6.38   0.000     7.06e-09    1.33e-08
----------------------------------------------------------------------------------------
Underidentification test (Kleibergen-Paap rk LM statistic):             82.803
                                                   Chi-sq(1) P-val =    0.0000
------------------------------------------------------------------------------
Weak identification test (Cragg-Donald Wald F statistic):              1.5e+05
                         (Kleibergen-Paap rk Wald F statistic):         31.516
Stock-Yogo weak ID test critical values:                       <not available>
------------------------------------------------------------------------------
Hansen J statistic (overidentification test of all instruments):         0.000
                                                 (equation exactly identified)
------------------------------------------------------------------------------
Instrumented:         inter_shock_idea inter_shock_geographic
                      inter_shock_coauthor
Included instruments: exper exper2 exper3 exper4
Excluded instruments: inter_instrument_idea inter_instrument_geographic
                      inter_instrument_coauthor
Dropped collinear:    post1992
------------------------------------------------------------------------------

.         sort unique year subject;

. merge unique year subject using /Volumes/Ddisk/Math/Soviet/outcome_variables_george.dta;
(note: you are using old merge syntax; see [D] merge for new syntax)

. drop _merge;

. replace share_of_papers=0 if share_of_papers==.;
(18023983 real changes made)

. replace top_papers=0 if top_papers==.;
(18023983 real changes made)

. generate top_publish=(top_papers>0);

. sort indicator_category;

. by indicator_category: egen m_share_of_papers = mean(share_of_papers);

. by indicator_category: egen m_top_papers = mean(top_papers);

. by indicator_category: egen m_top_publish = mean(top_publish);

. replace share_of_papers = share_of_papers - m_share_of_papers;
(17333371 real changes made)

. replace top_papers = top_papers - m_top_papers;
top_papers was byte now float
(6886569 real changes made)

. replace top_publish = top_publish - m_top_publish;
(6886569 real changes made)

. xtivreg2 share_of_papers post1992 exper* 
>         (inter_shock_idea inter_shock_geographic  inter_shock_coauthor= 
>         inter_instrument_idea inter_instrument_geographic inter_instrument_coauthor) , 
>         fe i(unique) cluster(unique);
Warning - collinearities detected
Vars dropped:  post1992

FIXED EFFECTS ESTIMATION
------------------------
Number of groups =     11173                    Obs per group: min =      1216
                                                               avg =    1622.0
                                                               max =      1728

IV (2SLS) estimation
--------------------

Estimates efficient for homoskedasticity only
Statistics robust to heteroskedasticity and clustering on unique

Number of clusters (unique) =    11173                Number of obs = 18122816
                                                      F(  7, 11172) =    45.65
                                                      Prob > F      =   0.0000
Total (centered) SS     =  141713.1984                Centered R2   =   0.0001
Total (uncentered) SS   =  141713.1984                Uncentered R2 =   0.0001
Residual SS             =  141706.0504                Root MSE      =   .08845

----------------------------------------------------------------------------------------
                       |               Robust
       share_of_papers |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-----------------------+----------------------------------------------------------------
      inter_shock_idea |    .012903   .0031683     4.07   0.000     .0066932    .0191127
inter_shock_geographic |   .0054862   .0034156     1.61   0.108    -.0012082    .0121807
  inter_shock_coauthor |   .0018847   .0019483     0.97   0.333    -.0019339    .0057033
                 exper |  -.0001828    .000039    -4.68   0.000    -.0002592   -.0001063
                exper2 |   .0000295   3.10e-06     9.52   0.000     .0000234    .0000356
                exper3 |  -6.81e-07   9.62e-08    -7.08   0.000    -8.70e-07   -4.92e-07
                exper4 |   4.58e-09   9.67e-10     4.73   0.000     2.68e-09    6.47e-09
----------------------------------------------------------------------------------------
Underidentification test (Kleibergen-Paap rk LM statistic):             82.803
                                                   Chi-sq(1) P-val =    0.0000
------------------------------------------------------------------------------
Weak identification test (Cragg-Donald Wald F statistic):              1.5e+05
                         (Kleibergen-Paap rk Wald F statistic):         31.516
Stock-Yogo weak ID test critical values:                       <not available>
------------------------------------------------------------------------------
Hansen J statistic (overidentification test of all instruments):         0.000
                                                 (equation exactly identified)
------------------------------------------------------------------------------
Instrumented:         inter_shock_idea inter_shock_geographic
                      inter_shock_coauthor
Included instruments: exper exper2 exper3 exper4
Excluded instruments: inter_instrument_idea inter_instrument_geographic
                      inter_instrument_coauthor
Dropped collinear:    post1992
------------------------------------------------------------------------------

. xtivreg2 top_publish post1992 exper* 
>         (inter_shock_idea inter_shock_geographic  inter_shock_coauthor= 
>         inter_instrument_idea inter_instrument_geographic inter_instrument_coauthor) , 
>         fe i(unique) cluster(unique);
Warning - collinearities detected
Vars dropped:  post1992

FIXED EFFECTS ESTIMATION
------------------------
Number of groups =     11173                    Obs per group: min =      1216
                                                               avg =    1622.0
                                                               max =      1728

IV (2SLS) estimation
--------------------

Estimates efficient for homoskedasticity only
Statistics robust to heteroskedasticity and clustering on unique

Number of clusters (unique) =    11173                Number of obs = 18122816
                                                      F(  7, 11172) =    12.01
                                                      Prob > F      =   0.0000
Total (centered) SS     =  4289.091223                Centered R2   =  -0.0000
Total (uncentered) SS   =  4289.091223                Uncentered R2 =  -0.0000
Residual SS             =   4289.28759                Root MSE      =   .01539

----------------------------------------------------------------------------------------
                       |               Robust
           top_publish |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-----------------------+----------------------------------------------------------------
      inter_shock_idea |   .0061754   .0008134     7.59   0.000     .0045812    .0077697
inter_shock_geographic |  -.0002054   .0008105    -0.25   0.800    -.0017939    .0013831
  inter_shock_coauthor |  -.0004833   .0005322    -0.91   0.364    -.0015263    .0005597
                 exper |   .0000351   7.55e-06     4.65   0.000     .0000203    .0000499
                exper2 |  -1.37e-06   5.59e-07    -2.46   0.014    -2.47e-06   -2.77e-07
                exper3 |   3.53e-08   1.66e-08     2.13   0.033     2.85e-09    6.78e-08
                exper4 |  -4.59e-10   1.65e-10    -2.78   0.005    -7.83e-10   -1.35e-10
----------------------------------------------------------------------------------------
Underidentification test (Kleibergen-Paap rk LM statistic):             82.803
                                                   Chi-sq(1) P-val =    0.0000
------------------------------------------------------------------------------
Weak identification test (Cragg-Donald Wald F statistic):              1.5e+05
                         (Kleibergen-Paap rk Wald F statistic):         31.516
Stock-Yogo weak ID test critical values:                       <not available>
------------------------------------------------------------------------------
Hansen J statistic (overidentification test of all instruments):         0.000
                                                 (equation exactly identified)
------------------------------------------------------------------------------
Instrumented:         inter_shock_idea inter_shock_geographic
                      inter_shock_coauthor
Included instruments: exper exper2 exper3 exper4
Excluded instruments: inter_instrument_idea inter_instrument_geographic
                      inter_instrument_coauthor
Dropped collinear:    post1992
------------------------------------------------------------------------------

. xtivreg2 top_papers post1992 exper* 
>         (inter_shock_idea inter_shock_geographic  inter_shock_coauthor= 
>         inter_instrument_idea inter_instrument_geographic inter_instrument_coauthor) , 
>         fe i(unique) cluster(unique);
Warning - collinearities detected
Vars dropped:  post1992

FIXED EFFECTS ESTIMATION
------------------------
Number of groups =     11173                    Obs per group: min =      1216
                                                               avg =    1622.0
                                                               max =      1728

IV (2SLS) estimation
--------------------

Estimates efficient for homoskedasticity only
Statistics robust to heteroskedasticity and clustering on unique

Number of clusters (unique) =    11173                Number of obs = 18122816
                                                      F(  7, 11172) =    10.24
                                                      Prob > F      =   0.0000
Total (centered) SS     =  7991.881382                Centered R2   =  -0.0000
Total (uncentered) SS   =  7991.881382                Uncentered R2 =  -0.0000
Residual SS             =  7991.987188                Root MSE      =   .02101

----------------------------------------------------------------------------------------
                       |               Robust
            top_papers |      Coef.   Std. Err.      z    P>|z|     [95% Conf. Interval]
-----------------------+----------------------------------------------------------------
      inter_shock_idea |   .0080773   .0011343     7.12   0.000     .0058541    .0103004
inter_shock_geographic |   .0002397   .0010714     0.22   0.823    -.0018602    .0023396
  inter_shock_coauthor |  -.0002529   .0007669    -0.33   0.742     -.001756    .0012502
                 exper |   .0000416   .0000103     4.05   0.000     .0000215    .0000618
                exper2 |  -1.77e-06   8.47e-07    -2.09   0.037    -3.43e-06   -1.07e-07
                exper3 |   5.13e-08   2.57e-08     2.00   0.046     9.50e-10    1.02e-07
                exper4 |  -6.87e-10   2.62e-10    -2.62   0.009    -1.20e-09   -1.73e-10
----------------------------------------------------------------------------------------
Underidentification test (Kleibergen-Paap rk LM statistic):             82.803
                                                   Chi-sq(1) P-val =    0.0000
------------------------------------------------------------------------------
Weak identification test (Cragg-Donald Wald F statistic):              1.5e+05
                         (Kleibergen-Paap rk Wald F statistic):         31.516
Stock-Yogo weak ID test critical values:                       <not available>
------------------------------------------------------------------------------
Hansen J statistic (overidentification test of all instruments):         0.000
                                                 (equation exactly identified)
------------------------------------------------------------------------------
Instrumented:         inter_shock_idea inter_shock_geographic
                      inter_shock_coauthor
Included instruments: exper exper2 exper3 exper4
Excluded instruments: inter_instrument_idea inter_instrument_geographic
                      inter_instrument_coauthor
Dropped collinear:    post1992
------------------------------------------------------------------------------

. log close;
      name:  <unnamed>
       log:  /volumes/ddisk/math/soviet/Table_5.log
  log type:  text
 closed on:  23 Mar 2014, 09:46:20
---------------------------------------------------------------------------------------------------
